论文部分内容阅读
平常教学中,关于等量同种、异种电荷连线上电场强度和电势的比较,往往更多地根据电场线的方向和分布定性地说明.由于电场线本身并不是客观存在的,而是人为引入的,再加上电场概念本身又比较抽象,不少同学对结论心存疑惑,更希望能够通过定量计算得出更具说服力的结论.笔者尝试着进一步分析发现,的确也可以通过定量计算进行说明,教学中也收到了理想的效果.一、等量同种电荷的电场强度和电势1.等量同种电荷的连线上
In normal teaching, the comparison of electric field strength and electric potential on the same type of same type and different type of electric charge is often more qualitatively described according to the direction and distribution of electric field lines. Since the electric field lines are not objectively existing in themselves, Introduced, coupled with the concept of the electric field itself is more abstract, many students doubts the conclusions, but also hope to be able to come to more convincing conclusions through quantitative calculation.I tried to further analysis found that indeed can also be calculated by the quantitative To explain, teaching also received the desired effect.A, the same amount of the same type of electric field strength and electric potential of the same amount of the same kind of charge connection